The web page of my article in the AMS editorial system for some three months says "Article status: Reviewing" and in the next line "Your paper is being handled by an editor". I find this confusing as the "reviewing" status appears to suggest that the article is with the referee(s) rather than with the editor but this in turn seems to contradict the line "Your paper is being handled by an editor".
Could someone with enough experience with AMS journals please explain how should one interpret the combination of "Article status: Reviewing" and the line "Your paper is being handled by an editor" at the article page?
More broadly, which are the possible article statuses in the AMS editorial system?
Many thanks in advance.